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Programming Speed Step CV's

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  • Member since
    September 2006
  • From: Buellton,CA.
  • 97 posts
Programming Speed Step CV's
Posted by cliffsrr on Tuesday, July 8, 2008 2:11 PM

Without going into DecoderPro or some other program, What is the best procedure for programming speed steps. The bare bones on track or programming track settings.

Cliff

  • Member since
    January 2007
  • 327 posts
Posted by locoworks on Tuesday, July 8, 2008 3:37 PM
your instruction book will tell you how to do it for your system,but there is no quick easy way of doing all the CV speed steps without a computer program to help.  it is a pain and you will need to keep a pen and paper record to remind you where you're upto and it will assist when it comes to adjusting and fine tuning.
  • Member since
    July 2006
  • 3,312 posts
Posted by locoi1sa on Tuesday, July 8, 2008 6:26 PM

  Depending on decoder make some will not support CV5 and CV6. But heres the easy setup for straight line acceleration. CV29 first to 34. This will give you 28 or 128 speed steps, Four digit address,Straight line acceleration and analog (DC) control off.

  Then CV2 adjust to get the loco moving slowly.

  Then CV5 to 255. That will give you full throttle at speed step 28/128.

  Then CV6 to 128.

   This will give you what you asked for.

       Pete
 

 I pray every day I break even, Cause I can really use the money!

 I started with nothing and still have most of it left!

  • Member since
    February 2002
  • From: Mpls/St.Paul
  • 13,775 posts
Posted by wjstix on Tuesday, July 8, 2008 7:36 PM
If your decoder supports CV 2,5 and 6 you can often just use that. If you've set it as locai1sa suggests, and the engine goes to fast, you can reduce CV 5 and 6. If you reduce 5 (max power) to 180 and 6 (half power) to 90, the decoder in effect fills in the intervening steps on a straight line curve.
Stix
  • Member since
    December 2004
  • From: Bedford, MA, USA
  • 21,333 posts
Posted by MisterBeasley on Thursday, July 10, 2008 10:13 AM
If you're looking for more realistic acceleration and braking, then adjust CV's 3 and 4, respectively.  I usually start them out at 10, and then tweak them based on how the engine performs.  With these two CV's set up, you can dial in the desired speed on your throttle, and the engine will slowly speed up to get there, rather than "jumping" right up to speed.  Likewise, you can crank your throttle right down to zero, and the engine will slow down more realistically.

It takes an iron man to play with a toy iron horse. 

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